First of all, I want to ask for your understanding as I use google translator to write this text. My problem is that the application ready for traffic on the runway (taxi to runway), PFE program is not responding, it is not possible to continue contact with the ATC, one time only managed to move operations taxi and take-off climb but a few minutes program crashed again. Only the ability to disable the task manager is Windows. My operating system is Windows 7 64-bit. I add that I wgranego PFE on drive E, I have turned off automatic actualized, the program purchased by e-mail, and after checking the updates I received a message that this is the latest version. Thank you for your help.I add that the PFE during installation and use of this program, turn off the Windows firewall and anti-virus software AVG Anti-Virus. THANK YOU. Robert.